Last updated: March 2, 2024
The weather in Sao Bartolomeu, Portugal, during September is characterized by an average temperature of 22°C (71°F). Highs can soar to 24°C (75°F), while lows may dip to 19°C (67°F). Typically, the humidity level in Sao Bartolomeu throughout September hovers around 82%.
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Humidity
In September, Sao Bartolomeu averages 45 mm (1.8 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 23 minutes of daylight, with the sun shining for approximately 10 hours 34 minutes each day. Additionally, there is a 40% probability of sunny days during this period.
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In September, the UV Index in Sao Bartolomeu reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 0 | 1 | 1 | 3 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||